ES2342326T3 - BEAM OF THE TYPE OF LONGER OR CROSSBODY IN A MOTOR VEHICLE. - Google Patents

Abstract

The longitudinal or lateral carrier (1) for a motor vehicle chassis, especially a sill, has at least two components (2,3) forming a hollow zone between them. They are bonded together at least at two points (5,6) to the vehicle chassis (7). Each component gives at least one bonding point.

Description

Beam of crossbar or crossbar type in a motor vehicle

The invention concerns a beam of the type of crossbar or crossbar in a motor vehicle, especially in shape of a door threshold, with at least two components that are united with each other forming a cavity, presenting at least one of the components stiffening elements that penetrate the cavity.

Technological background

Beams in the manner of a stringer or a crossbar today constitute a common part of the body  Self-supporting car. The beams can form, for example, the so-called door threshold. This one is below the door entrance, along both sides of the vehicle car and between the front and rear wheel boxes. The beams should have, on the one hand, a relatively high stiffness to keep plastic deformations small, precisely in the joints with the added parts of the body, and avoid squeaking noises during the march. Also, due to stiffness relatively high, the forces that arise in case of a shock can be deliberately retransmitted through the beam to the deformable area of the body. At the same time, the own beam should be able to absorb itself to some extent, by elastic deformation, the impact energy that occurs in case of a crash. In addition, the beam must be constructed, naturally, so that it is as light as possible in terms of weight. To meet these requirements they are usually formed today in day beams based on multihull components that are attached one with another forming at least one cavity. These beams are configured today in an increasingly complex way in order to that the requirements for the case of a shock.

State of the art

A beam of the class discussed here is known by document FR 2 799 717 A. This serves as a stringer or as crossbar in a motor vehicle. The known beam presents two profiled pieces that are joined together forming a cavity. The known beam also has stiffening elements. which are arranged transversely to the longitudinal direction of the profiled parts that are designed to support against said profiled parts.

Beams for use in motor vehicles, which they have stiffening elements, they are also known by the WO 02/11261 A and DE 100 65 219 C1, as well as by generic document WO 2005/108193 A.

Other beams are already known by the documents DE 10 2004 044 054 A1, DE 10 2004 044 037 A1 or DE 10 2004 033 971 A1. Each beam is solidly joined, along its length longitudinal, with the body floor plate, the so-called main floor To this end, in a helmet that forms the beam they have provided at least two junction areas for mooring the ground principal. These junction areas are arranged here in the section of the hull material of the beam that forms at the same time with the Another hull of the beam is the at least one cavity of said beam. It has been checked that the mooring of the main body floor at junction areas provided there on the beam can drive, in case of shock, to such a strong plastic deformation of the beam that may cause in this area an involuntary failure of the components.

To avoid, in case of shock, a deformation too strong plastic of the beam are also known by the document DE 10 2004 044 054 A1 stiffening elements that are provided in one of the building elements in the form of hull of the beam and they serve especially for purposes of stiffening in the longitudinal extension of said beam.

In known beams it can materialize only with a construction and manufacturing cost a relatively high mooring to the main body floor when said main floor does not present a constant form in the direction of the longitudinal extension of the beam. In effect, the hull of the beam provided with the joining areas for the bodywork you have to receive a correspondingly adapted form for this, what in practice can often materialize only with a relatively high manufacturing cost. The element of beam construction has to be configured in a way corresponding so that the joining areas are adapted just this way of the body part.

It is known from US 5 829 824 A resource that, to reinforce the floor plate of a vehicle, fix both beam parts from below and from above hull to the floor plate by welding. The respective part of the beam is then joined with the floor plate of such so that a respective cavity is formed.

It is known from document DE 196 13 219 A1 a hollow profiled beam for a motor vehicle that is composed of two pieces shaped like a trough. Between the pieces profiled is a reinforcement piece that runs in the longitudinal direction of the hollow profiled beam. In the piece of reinforcement grooves are formed.

Problem Statement

The invention is based on the problem of proposing a beam with the characteristics mentioned at the beginning, in which improve, with little manufacturing cost, the support action of stiffening elements

Invention and advantageous effects

To solve the problem, a beam is proposed presenting the characteristics cited in claim 1. The beam contains at least two components that are attached to each other forming a cavity, presenting at least one of the components stiffening elements. The beam is characterized, among others things, because the stiffening elements of at least one component have two surfaces that are designed to lean against the other component.

Thanks to this measure, a double is awarded function to the stiffening elements. On the one hand, these stiffen, in its longitudinal extension, the component in which They are willing. In addition, it can be avoided thanks to them a involuntary plastic deformation of the components, since these, In the event of a crash, they serve as support for the other component. By therefore, it is possible that, by means of the stiffening elements, the impact energy that occurs in the event of a crash is deliberately retransmitted through the beam, for example, to a deformable area of the body.

According to the invention, it is provided that the support surface of the stiffening elements is formed by one angled end. It becomes possible with little cost of manufacturing a particularly good supportive action with respect to another component through the stiffening elements.

To solve the problem, a beam with the features of claim 24.

According to an embodiment of the invention, it has been provided that the stiffening elements are supported with their support surface against the other component. In this way, it can further reduce a possible deformation of the other component, since the components of the beam are already supported from the factory one against another by means of stiffening elements.

It is advantageous that the stiffening elements of at least one component are fixed to the other component. Preferably, this fixation can be materialized by of a thermal or bonding assembly procedure. Of this mode, a composite structure is manufactured with the two components especially rigid to flex.

According to another embodiment of the invention, it has been provided that the stiffening elements are formed by the less a component. The stiffening elements do not have so be manufactured separately or costly fixed to component.

According to an advantageous embodiment of the invention, it is also provided that the stiffening elements are obtain from at least one component per reform, by example by stamping, recessed / repulsed, deep drawing In this way, it is possible without problems a especially simple manufacturing of even a large number of stiffening elements incorporated in the component. A great number of components can also be provided with elements of stiffening without a great cost.

According to an alternative embodiment of the invention, stiffening elements are provided to be shaped by cutting and subsequent reform from at least one component. In this way, a manufacturing is also possible simple stiffening elements from component.

A manufacturing is specially provided simple when the stiffening elements are formed by die cutting and subsequent bending of the die section. Due to the curved, the die-cut section can be individually oriented, with what is possible without problems an adaptation to different component assembly situations.

According to another embodiment of the invention, it is provided that the stiffening elements are located substantially transverse with respect to the longitudinal direction of the at least one component. A particularly good stiffening action is thus achieved by the stiffening elements in the transverse direction, whereby the forces acting, for example, in case of a lateral impact can be transmitted directly to internal crossbars. Preferably, the stiffening elements should penetrate inside the chamber for this purpose.
life

According to another embodiment of the invention, it has been provided that the stiffening elements are provided in the At least two components. An effect of stiffening even better transverse to the direction longitudinal of the beam.

In this direction, the measure of that the stiffening elements are arranged to certain distance from each other in the components such that it alternate the stiffening elements of the components.

According to an embodiment of the invention, it has been provided that at least two components can be fixed to the body  of the vehicle through at least two junction zones and that each of the components form at least one of the joining areas, forming at least one of the components with one of its ends a of the joining areas and leaning with its other end against the another component outside its junction zone.

It has been seen that, thanks to this measure, the beam presents precisely in its areas of union for the body a greater rigidity compared to the beams known so far. Be they can deliberately reduce possible deformations plastics that occur in the beam in case of shock until the point that a breakage of the beam in the area of its zones is avoided of union with the body.

However, the at least one component of the beam has one of the joining areas at one of its ends and its another end leans against the other component outside its zone of union, the possibility that the junction areas can still be immobilized in their position a with respect to another through an alignment of the components during Your assembly The beam can thus be fixed without problems also to a vehicle body, especially to the main floor of the self-supporting body, whose shape is not constant along the jointing areas of the beam. In other words, through the beam can still be an alignment of its junction areas with each other when assembling the components during assembly.

According to an advantageous embodiment of the invention, it is planned that each of the components form with one of its ends one of the areas of union and with its other end is supported against the respective other component outside its zone of Union. The components joined together in this way form a beam with a particularly high rigidity, especially in the areas of Union. Since the same functions are assigned to the extremes of the components, a particularly simple manufacturing is possible of the components, since these can be constructed in principle of the same way.

According to another embodiment of the invention, it has been provided that the at least two components present along their length a substantially constant cross section. Be this gives the components a particularly simple contour to materialize and that, therefore, can be obtained at low cost.

They result in an additional simplification of the manufacturing and, therefore, a large cost reduction when components are equal components with cross section substantially constant along its length. In this way, in the manufacture of the beams, only one can be used component class, which simplifies together the beam fabrication and costs can be saved, for example for the manufacture of other components.

According to another embodiment of the invention, it has been provided that each of the components forms at least one of the junction areas and that at least one of the components is designed with its at least one junction zone to be fixed to an outline of the body that varies in the longitudinal extension of the beam.

It has been seen that, thanks to this measure, it also materializes a beam with high rigidity of shape, especially in its areas of union with the body. Besides, the beam can be adjusted flexibly and with little cost to a variable contour of the body. This is especially advantageous. in those beams that can no longer be made only by alignment of the joining areas with each other when assembling the components during assembly. Therefore, the beam can be used also without problems in bodies with a contour variation especially strong in the joist areas of the beam.

According to an execution of this idea of the invention, it is envisioned that the other component present in all its  length a substantially constant cross section. Of this mode, it can be materialized at a cost especially under a beam that is suitable for fixing to a body contour that It varies in the longitudinal extension of the beam. Indeed, at least The other component can be manufactured at low cost as a component with constant cross section along its length.

Preferably, the component with the section substantially constant transverse should be a piece formed by lamination. Indeed, due to the procedure of rolling forming components can be manufactured with high stability of dimensions. This stability of dimensions can be achieved also for a material used in the components with a especially high resistance, even when this material is present a relatively high reconformation at the factory.

Another embodiment of the invention provides that junction areas are arranged in sections of the beam that protrude  of the cavity. It is thus possible to make the mooring to the body of an especially simple way, since they are formed by of the stretches located outwardly well accessible areas from outside, for example for a welding robot, in the manner of splice flanges. In addition, it has been seen that, due to the provision of the areas of union in sections located outside, it is avoided in crash event a premature failure of the components in the zones of Union.

In an embodiment of the invention, it is provided that the sections extend in the longitudinal direction of the cavity. Thus, on the one hand, a union can materialize especially firm and stable between the beam and the body and, for another, more enhanced protection against impacts is achieved due to to the relatively large joint surface between the respective junction area and body component. This is what It occurs especially when the sections extend throughout the Cavity and body length is widely applied from flat to these sections.

According to another embodiment of the invention, they have been planned three components that have been assembled forming a cavity that encloses two cameras. Thus a cavity materializes with high rigidity and improved ability to absorb energy from impact.

It is offered that the components are manufactured by forming by lamination and / or by extrusion. It is done like this possible safe component production in your process and Exact in their dimensions. The components can be manufactured like this also at a very low cost and easily in lengths different.

The components must be configured here preferably in the form of a helmet. It can thus materialize a light weight support that, due to its shape, is present at the same time also a more rigid form of factory high.

Preferably, the components should be manufactured in a lightweight construction material, such as, by example, an aluminum metal. This saves weight additional due to the nature of the material. Such materials are they can manufacture especially well by the procedure of lamination forming or extrusion process.

It is offered that the components are manufactured from an equal or different metal, especially non-ferrous metal / metal iron It is thus possible to adjust in detail the properties of rigidity or deformation of the beam to the respective requirements functional.

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Examples of realization

Other advantages and possibilities of application of The present invention follows from the following description of several embodiments with the help of the drawings.

They show:

Figure 1, a possible embodiment of a beam according to the invention disposed in a car body
hicle, in exploded representation,

Figure 2, the beam according to Figure 1 in a perspective representation,

Figure 3, the beam according to Figure 1 in a exploded view,

Figure 4, the beam according to Figure 1 in a cross-sectional representation along the line of section A-A according to figure 2,

Figure 5, the beam according to Figure 1 in a cross-sectional representation along the line of section B-B according to figure 2,

Figure 6, another embodiment of the beam according to the invention in a cross-sectional representation
Salt,

Figure 7, another embodiment of the beam according to the invention in a sectional representation cross,

Figure 8, another additional embodiment of the beam according to the invention with three components in one cross section representation,

Figure 9, the beam component according to the Figure 1 with stiffening elements in a view in perspective,

Figure 10, another embodiment of the beam according to the invention with stiffening elements in a cross section representation and

Figure 11, another embodiment of the beam component according to the invention with elements of stiffening in a perspective view.

Figures 1 to 5 show in different views a possible embodiment of a beam 1 according to the invention. Beam 1 can be used as a crossbar or as a crossbar in a motor vehicle and can be fixed to the body 7 of the vehicle. In particular, beam 1 may be configured in the form of a door threshold that can be attached laterally to the sheet floor 15 through joining pieces 16, 17, 18.

Beam 1 has at least two components 2, 3 that are attached to each other forming a cavity 4. Beam 1 it also has at least two junction zones 5, 6 by means of the which can be fixed this beam to the body 7 of the vehicle, preferably to the main floor of the body 7.

In the beam 1 it is provided that the joining areas 5, 6 are arranged in sections 8, 9 of the beam 1 protruding from the cavity 4. A simple assembly of the beam 1 in the connecting pieces 16, 17 is thus possible , 18 with the floor plate 15 of the body or the main floor of the body. Likewise, by means of the sections 8, 9 that protrude from the cavity 4, a wide damping of the impact energy that presses on the floor plate 15 can be achieved in the event of a crash. In each of the components 2, 3 there is planned here one of the joining areas
5, 6.

Sections 8, 9 extend in the direction longitudinal of the cavity 4 along its entire length. The sections 8, 9 are formed here by ends of components 2, 3. As can be seen especially in a joint contemplation of figures 2, 4 and 5, at least one of the sections 8, 9, specifically section 9, is designed to fix it to an outline of the body 7 which varies along its junction zone 6. In The present embodiment varies, for example, the contour 7 of the body in the sense that section 9 has a offset in the longitudinal direction of beam 1 and therefore have a variable cross section in the longitudinal direction of said beam 1. On the contrary, the other component 3 can present a substantially constant cross section throughout its length to make a simple manufacturing possible by extrusion, rolling profiling processes similar reform. However, a precondition for this is that at least one of the components 2, 3 of beam 1 forms only one of the sections 8, 9, since, otherwise, both components 2, 3 would have to adapt with their sections 8, 9 to variable body contour 7.

In the exemplary embodiment according to figures 1 at 5 a single section 8 or 9 is also formed each time only by a component 2 or 3.

Of course, it can also be provided according to another embodiment, as can be seen in the figure 8, that the junction zone 75 is formed by a section 78 of a component 72 and, in addition, along a section 78 'of the other component 73. However, in this case the joining area 76 formed by one of the sections, specifically section 79, is provided only in a component 73, so that section 79 can be designed to fix it to a body contour that varies in the direction length of beam 70, as occurs, for example, in the embodiment according to figures 1 to 5. Component 72 of the embodiment of figure 8 may be configured here again with a substantially constant cross section in full length

Unlike the embodiment according to Figures 1 to 5, the embodiment according to Figure 8 shows, apart from components 72, 73, a third component additional 10, components 72, 73, 10 being assembled with formation of a cavity 74 that encloses two chambers 11, 11 '. The beam 70 shown in figure 8 is thus of a stiffness of shape especially big.

Figure 6 shows in section representation transversal another embodiment of a beam 50. They are provided there two components 52, 53 which both have a substantially constant cross section throughout its length and in which, due to the draft of the two components 52, 53 one inside another, a cavity 54 is formed. Beam 50 presents here joining areas 55, 56 that are arranged in sections 58, 59 of said beam 50 protruding from the cavity 54.

Figure 7 shows another embodiment of a beam 60 with two components 62, 63 that are joined one with another forming a cavity 64 and which are fixed to the body (not represented) of the vehicle through at least two junction zones 65, 66. In this embodiment the joining areas 65, 66 are also arranged in sections 68, 69 of beam 60 protruding from the cavity 64. The component 63 is designed to be fixed with its section 69 to a body contour (not shown) of the vehicle that varies in the longitudinal direction of beam 60. A difference of the cross section of the embodiment according to figures 4 and 5, in beam 60 according to figure 7 the two components 62, 63 are assembled in such a way that only it uses a part of component 62 to form cavity 64. Another part of component 62 is configured in the manner of a wing layered at whose free end is section 68.

In the exemplary embodiment according to the figures 1, 2 and 9 component 3 has stiffening elements 12 that have been formed from component 3. The elements of stiffening 12 have been shaped by cutting and reforming subsequent from component 3. For cutting may be provided, for example, a die-cutting procedure and for reform can be provided, for example, a procedure of bent.

The stiffening elements 12 look substantially transverse to the longitudinal direction of component 3 and penetrate here into the hollow of cavity 14. Due to the conformation of the stiffening elements 12 a from component 3, this component 3 together with the elements stiffening 12 can be specially manufactured simple and cheap. In effect, component 3 can be shaped first in a piece by lamination or extrusion and then you can produce from it the stiffening elements in steps subsequent procedure. This also results in savings of weight, since no additional components have to be installed in the component 3.

In the exemplary embodiment of a beam 80 represented in figure 10 component 83 is formed with a stiffening element 13 such that this element is angled at its end, so the angled end forms a overlapping surface in a second component 82. The element of stiffening 13 can thus be fixed without problems to the component 82, for example by means of an assembly procedure thermal.

Figure 3 shows another embodiment of a component 3 'with stiffening elements 14 in the form of cuvette which, seen in the longitudinal direction of component 3 ', They are arranged one after another. The components 14 have been formed there from component 3 'through reformation, for example by forming in stamping, recessing / rejection or drawing deep

In the embodiments above described of the beam according to the invention the components can Obtained by the combination of cold formed parts by pressing and lamination, provided that the components, seen in longitudinal direction, have a cross section constant.

As can be seen especially in the figure 10, the junction zone 6 'may have recesses 19, for example in shape of grooves, notches or prints. Can be thus compensate for jumps of thickness in the material of section 8 '. The components (2, 3; 52, 53; 62, 63; 72, 73; 82, 83) of the examples of embodiment described above may be made of an equal or different metal, such as, for example, non-metal ferrous / ferrous metal. The components (2, 3; 52, 53; 62, 63; 72, 73; 82, 83) may also have different lengths, being able to stiffening elements 12, 13, 14 be arranged so that are distributed throughout the length of the respective component (3, 3 ', 83).

List of reference symbols

one

Beam

2

Component

3

Component

4

Cavity

5

Junction zone

6, 6 '

Junction zone

7

Bodywork

8, 8 '

Stretch

9

Stretch

10

Component

11, 11 '

Cameras

12

Stiffening element

13

Stiffening element

14

Stiffening element

fifteen

Floor plate

16

Union piece

17

Union piece

18

Union piece

19

Depression

fifty

Beam

52

Component

53

Component

54

Cavity

55

Junction zone

56

Junction zone

58

Stretch

59

Stretch

60

Beam

62

Component

63

Component

64

Cavity

65

Junction zone

66

Junction zone

68

Stretch

69

Stretch

70

Beam

72

Component

73

Component

74

Cavity

75

Junction zone

76

Junction zone

78, 78 '

Stretch

79

Stretch

80

Beam

82

Component

83

Component

84

Cavity

85

Extreme

86

Extreme

87

Support surface

88

Angled end

Claims (25)

1. Beam (1; 80) of the beam or crossbar type in a motor vehicle, especially in the form of a door threshold, with at least two components (2, 3; 2, 3 '; 82, 83) that are attached with each other forming a cavity (4; 84), characterized in that at least one of the components (2, 3; 2, 3 '; 82, 83) has stiffening elements (12; 13; 14) that penetrate the cavity (4, 84) and bearing two surfaces (87) that are designed to rest against the other component (2; 2; 82), the support surface (87) being formed by an angled end (88) of one of the stiffening elements (12; 13). 2. Beam according to claim 1, characterized in that the stiffening elements (12, 13) are supported with their bearing surface (87) against the other component (2; 2; 82). 3. Beam according to claim 1 or 2, characterized in that the stiffening elements (12; 13) of the at least one component (3; 83) are preferably fixed with their bearing surface (87) to the other component (2; 82) , preferably by means of a thermal assembly process. 4. Beam according to any of the preceding claims, characterized in that the stiffening elements (12; 13; 14) are formed in the at least one component (3; 3 '; 83). 5. Beam according to any of the preceding claims, characterized in that the stiffening elements (14) have been formed in the at least one component (3 ') by reforming, for example by stamping, recessed / repulsed, deep drawing. 6. Beam according to any of claims 1 to 4, characterized in that the stiffening elements (12; 13) have been obtained in the at least one component (3; 83) by subsequent cutting and reforming. 7. Beam according to claim 6, characterized in that the stiffening elements (12; 13) have been obtained by die-cutting and subsequent bending of the die-cut section. 8. Beam according to any of the preceding claims, characterized in that the stiffening elements (12; 13; 14) are located substantially transverse to the longitudinal direction of the at least one component (3; 3 '; 83). 9. Beam according to any of the preceding claims, characterized in that the stiffening elements are provided in the at least two components. 10. Beam according to claim 9, characterized in that the stiffening elements are arranged in the components at a certain distance from each other in such a way that said stiffening elements of the components are alternated. 11. Beam according to any of the preceding claims, characterized in that the at least two components (2, 3; 52, 53; 62, 63; 72, 73) can be fixed to the body (7) of the vehicle through at least two junction zones (5, 6; 55, 56; 65, 66; 75, 76) and each of the components (2, 3; 52, 53; 62, 63; 72, 73) forms at least one of the junction zones (5, 6; 55, 56; 65, 66; 75, 76), forming at least one of the components (2, 3; 52, 53; 62, 63; 72, 73) with its one end ( 85) one of the joining areas (5, 6; 55, 56; 65, 66; 75, 76) and resting with its other end (86) against the other component (3, 2; 53, 52; 63, 62 ; 73) outside the junction zone (6, 5; 56, 55; 66, 65; 76) of this
latest. 12. Beam according to claim 11, characterized in that each of the components (2, 3; 52, 53; 62, 63) forms with its end (85) one of the joining areas (5, 6; 55, 56; 65, 66) and rests with its other end (86) against the respective other component (2, 3; 52, 53; 62, 63) outside the junction zone (6, 5; 56, 55; 66 , 65) of the latter. 13. Beam according to claim 11 or 12, characterized in that the at least two components (2, 3; 52, 53; 62, 63; 72, 73; 82, 83) have a substantially constant cross section throughout their length. 14. Beam according to any of claims 11 to 13, characterized in that in the case of components (52, 53) with substantially constant cross-section over the entire length, the components (52, 53) are equal parts. 15. Beam according to claim 11 or 12, characterized in that each of the components (2, 3; 52, 53; 62, 63; 72, 73) forms at least one of the joining areas (5, 6; 55, 56; 65, 66; 75, 76) and at least one of the components (2, 3; 52, 53; 62, 63; 72, 73) is designed to be fixed with its at least one junction zone (6; 56 ; 66; 76) to a body contour (7) that varies in the direction of the longitudinal extension of the beam (1; 50; 60; 70). 16. Beam according to claim 15, characterized in that the other component (2; 52; 62; 72) has a substantially constant cross section along its entire length and is preferably a piece formed by rolling. 17. Beam according to any of claims 11 to 16, characterized in that the joining areas (5, 6; 55, 56; 65, 66; 75, 76) are arranged in sections (8, 9; 58, 59; 68, 69; 78, 79) of the beam (1; 50; 60; 70) protruding from the cavity (4; 54; 64; 74). 18. Beam according to claim 17, characterized in that the sections (8, 9; 58, 59; 68, 69; 78, 79) extend in the longitudinal direction of the cavity (4; 54; 64; 74), preferably a all along its length. 19. Beam according to claim 17 or 18, characterized in that the sections (8, 9; 58, 59; 68, 69; 78, 79) are formed by ends of the components (2, 3; 52, 53; 62, 63 ; 72, 73). 20. Beam according to any of claims 11 to 19, characterized in that three components (72, 73, 10) are provided which are assembled forming a cavity (74) enclosing two chambers (11, 11 '). 21. Beam according to any of the preceding claims, characterized in that the components (2, 3; 52, 53; 62, 63; 72, 73; 82, 83) are shaped in the form of a helmet and preferably the components (2; 52, 53; 62; 72) have been manufactured with constant cross section over the entire length by rolling and / or extrusion forming. 22. Beam according to any of the preceding claims, characterized in that the components (2, 3; 52, 53; 62, 63; 72, 73; 82, 83) have been manufactured based on a lightweight construction material, such as, for example, an aluminum metal, a magnesium metal or an ultra-high strength steel. 23. Beam according to any of the preceding claims, characterized in that the components (2, 3; 52, 53; 62, 63; 72, 73; 82, 83) are made of the same or different metal, especially non-ferrous metal / metal iron 24. Beam of the beam or crossbar type in a motor vehicle, especially in the form of a door threshold, with at least two components (2, 3 ') that are connected to each other forming a cavity (84), characterized in that the At least one of the components (2, 3 ') has stiffening elements (14) that penetrate the cavity (4; 84) and each have a surface (87) that is designed to rest against the other component (2), the stiffening elements (14) being configured as a tray. 25. Motor vehicle with at least one beam (1; fifty; 60; 70; 80) according to any of the claims previous.